h1, h3 {
    text-align: center;
  }
  * {
    font-family: sans-serif;
  }
  main {
    width: 50vw;
    margin: auto;
  }
  div {
    margin: 10px;
  }
  #autocomplete {
    margin: auto;
    display: block;
    width: 90%;
  }
  #successful {
    background: #d8fbd8;
  }
  #redundant {
    background: #f6c3c3;
  }